net.scran24.common.client.UserInfoUpload.java Source code

Introduction

Here is the source code for net.scran24.common.client.UserInfoUpload.java

Source

/*
This file is part of Intake24.
    
 Crown copyright, 2012, 2013, 2014.
    
This software is licensed under the Open Government Licence 3.0:
    
http://www.nationalarchives.gov.uk/doc/open-government-licence/
*/

package net.scran24.common.client;

import java.util.List;

import net.scran24.datastore.shared.UserInfo;

import org.workcraft.gwt.shared.client.Callback1;
import org.workcraft.gwt.shared.client.Option;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FileUpload;
import com.google.gwt.user.client.ui.FormPanel;
import com.google.gwt.user.client.ui.FormPanel.SubmitCompleteEvent;
import com.google.gwt.user.client.ui.FormPanel.SubmitCompleteHandler;
import com.google.gwt.user.client.ui.FormPanel.SubmitEvent;
import com.google.gwt.user.client.ui.FormPanel.SubmitHandler;
import com.google.gwt.user.client.ui.HTMLPanel;
import com.google.gwt.user.client.ui.Hidden;
import com.google.gwt.user.client.ui.VerticalPanel;

public class UserInfoUpload extends Composite {

    public UserInfoUpload(final String surveyId, final String role, final List<String> permissions,
            final Callback1<Option<String>> onUploadComplete) {
        final FormPanel form = new FormPanel();
        form.setAction(GWT.getModuleBaseURL() + "../staff/uploadUserInfo?surveyId=" + surveyId);

        form.setEncoding(FormPanel.ENCODING_MULTIPART);
        form.setMethod(FormPanel.METHOD_POST);

        VerticalPanel panel = new VerticalPanel();
        form.setWidget(panel);

        final Hidden roleField = new Hidden("role", role);
        panel.add(roleField);

        for (String perm : permissions) {
            final Hidden permField = new Hidden("permission", perm);
            panel.add(permField);
        }

        final FileUpload upload = new FileUpload();
        upload.setName("file");
        panel.add(upload);

        Button uploadButton = WidgetFactory.createButton("Upload", new ClickHandler() {
            @Override
            public void onClick(ClickEvent event) {
                form.submit();
            }
        });

        uploadButton.getElement().addClassName("scran24-admin-button");

        panel.add(uploadButton);

        form.addSubmitHandler(new SubmitHandler() {
            @Override
            public void onSubmit(SubmitEvent event) {
                if (upload.getFilename().isEmpty()) {
                    Window.alert("Please choose a .csv file containing user information to upload");
                    event.cancel();
                }
            }
        });

        form.addSubmitCompleteHandler(new SubmitCompleteHandler() {
            @Override
            public void onSubmitComplete(SubmitCompleteEvent event) {
                // This is not a very robust way of detecting the status code,
                // but unfortunately there does not seem to be a better way of
                // doing this that supports IE8
                // https://code.google.com/p/google-web-toolkit/issues/detail?id=7365

                String result = event.getResults();

                if (result.equals("OK")) {
                    onUploadComplete.call(Option.<String>none());
                } else if (result.startsWith("ERR:")) {
                    onUploadComplete.call(
                            Option.some("There was a problem uploading user information: " + result.substring(4)));
                } else if (result.contains("401")) {
                    LoginForm.showPopup(new Callback1<UserInfo>() {
                        @Override
                        public void call(UserInfo info) {
                            form.submit();
                        }
                    });
                } else if (result.contains("403")) {
                    // User is not authorised, e.g. someone has logged on as
                    // admin, opened the user upload tab and timed out, then someone
                    // else logged on as someone who does not have the right to
                    // upload users. In this case, let them know and refresh the
                    // page to either show the UI that corresponds to their set of
                    // permissions or redirect them to another page.
                    onUploadComplete.call(Option.some("You are not authorised to upload user information."));
                } else {
                    onUploadComplete
                            .call(Option.some("There was an problem uploading user information: " + result));
                }
            }
        });

        initWidget(form);
    }
}